CVE-2017-6753: Cisco Webex Event Center
High severity, CVSS 8.8. EPSS: 6% chance of exploitation in the next 30 days.
A vulnerability in Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server, Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center), and Cisco WebEx Meetings when they are running on Microsoft Windows. The vulnerability is due to a design defect in the extension. An attacker who can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser. The following versions of the Cisco WebEx browser extensions are affected: Versions prior to 1.0.12 of the Cisco WebEx extension on Google Chrome, Versions prior to 1.0.12 of the Cisco WebEx extension on Mozilla Firefox. Cisco Bug IDs: CSCvf15012 CSCvf15020 CSCvf15030 CSCvf15033 CSCvf15036 CSCvf15037.
Affected products
- Cisco Webex Event Center: version t30_base only; version t31_base only; version t32_base only
- Cisco Webex Meeting Center: version t30_base only; version t31_base only; version t32_base only
- Cisco Webex Meetings: version t30_base only
- Cisco Webex Meetings Server: version 1.1_base only; version 1.5.1.6 only; version 1.5.1.131 only; version 1.5_base only; version 2.0.1.107 only; version 2.0_base only; …
- Cisco Webex Meetings Server 2.0: version mr2 only; version mr3 only; version mr4 only; version mr5 only; version mr6 only; version mr7 only; …
- Cisco Webex Meetings Server 2.0 MR8 Patch: version 1 only
- Cisco Webex Meetings Server 2.0 MR9 Patch: version 1 only; version 2 only; version 3 only
- Cisco Webex Meetings Server 2.5: version mr1 only; version mr2 only; version mr3 only; version mr4 only; version mr5 only; version mr6 only
- Cisco Webex Meetings Server 2.5 MR2 Patch: version 1 only
- Cisco Webex Meetings Server 2.5 MR5 Patch: version 1 only
- Cisco Webex Meetings Server 2.5 MR6 Patch: version 1 only; version 2 only; version 3 only; version 4 only
- Cisco Webex Meetings Server 2.6: version mr1 only; version mr2 only; version mr3 only
- Cisco Webex Meetings Server 2.6 MR1 Patch: version 1 only
- Cisco Webex Meetings Server 2.6 MR2 Patch: version 1 only
- Cisco Webex Meetings Server 2.6 MR3 Patch: version 1 only; version 2 only
- Cisco Webex Meetings Server 2.7: version mr1 only; version mr2 only
- Cisco Webex Meetings Server 2.7 MR1 Patch: version 1 only
- Cisco Webex Meetings Server 2.7 MR2 Patch: version 1 only
- Cisco Webex Support Center: version t30_base only; version t31_base only; version t32_base only
- Cisco Webex Training Center: version t30_base only; version t31_base only; version t32_base only
Published 2017-07-25. Last modified 2026-06-17.